Android Question Large Text

aaronk · Apr 24, 2018

Hi,

I am trying to work out how to scale the text size in my layout based on the device if it has 'Large Text' enabled in the Android settings?

I have been watching Erels video tutorial on the scaling but can't work out how to do this.

I am testing this using my Nexus 5.

For testing I created a small sample on what I am trying to do..

In the image below, the screenshot on the left is with 'Large Text' turned off (default) which is what I want. If I enable 'Large text' from the Android accessibility settings, then it shows the text larger but I want it to auto scale down to the normal text size like on the left screenshot. (In other words, I want it to look like the screenshot on the left regardless what text size the user has set on the Android system)

I have my layout variant set to 320 x 480, scale= 1 (160 dpi)
In the designer script I only have AutoScaleAll.
In the designer, I only have a label.

Is there a way for my app to ignore if the user has 'large text' enabled and scale it to default and not large text ?

udg · Apr 24, 2018

I did a very quick search and found a reference to Configuration.fontScale.
Maybe you could read that value and apply a reduction scale factor to current text size.

LucaMs · Apr 24, 2018

Adapting graphics is already a complicated task. I would not give importance to this user setting; if he will see too big texts, he will understand and change settings.

aaronk · Apr 25, 2018

I ended up using:

B4X:

For Each v As View In Activity.GetAllViewsRecursive
        If v Is Label Then
            Dim c As Label
            c = v
            c.TextSize = c.TextSize / Starter.access.GetUserFontScale
        End If
    Next

Which works fine if the label is in the activity.

But can't work out how to do the same if the label is in a TabStrip, as it doesn't look like it's changing any label text sizes in the TabStrip ?

Erel · Apr 26, 2018

Change the code to:

B4X:

Sub RescaleTextSize(parent As Panel)
For Each v As View In parent.GetAllViewsRecursive
        If v Is Label Then
            Dim c As Label
            c = v
            c.TextSize = c.TextSize / Starter.access.GetUserFontScale
        End If
    Next
End Sub

Add a base panel for each of the TabStrip tabs.

B4X:

For Each Parent As Panel In Array(Activity, BasePanel1, BasePanel2, ...)
 RescaleTextSize(Parent)
Next

aaronk · Apr 26, 2018

Erel said:
Add a base panel for each of the TabStrip tabs.

What do you mean by that ?

Erel · Apr 26, 2018

Put all the views in the layout inside a panel to make it easy to access them.

aaronk · Apr 26, 2018

Oh.. I knew that

Android Question Large Text

aaronk

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udg

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LucaMs

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Erel

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aaronk

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Erel

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